The Taj Mahal is a white marble mausoleum located in Agra, India on the southern bank of the Yamuna River. It was commissioned in 1632 by the Mughal emperor Shah Jahan as a tomb for his favorite wife, Mumtaz Mahal, who died in 1631 while giving birth to their 14th child. Construction of the Taj Mahal began in 1632 and took over 20 years to complete, finishing in 1653. It is considered the finest example of Mughal architecture, and was built out of white marble by the Persian architect Ustad Ahmad Lahauri under the patronage and supervision of Shah Jahan.